feat(ethclient & gethclient): support blob transaction

consensus/misc/eip4844.go

@@ -0,0 +1,60 @@
+// Copyright 2023 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package misc
+
+import (
+	"math/big"
+
+	"github.com/scroll-tech/go-ethereum/params"
+)
+
+var (
+	minBlobGasPrice            = big.NewInt(params.BlobTxMinBlobGasprice)
+	blobGaspriceUpdateFraction = big.NewInt(params.BlobTxBlobGaspriceUpdateFraction)
+)
+
+// CalcExcessBlobGas calculates the excess blob gas after applying the set of
+// blobs on top of the excess blob gas.
+func CalcExcessBlobGas(parentExcessBlobGas uint64, parentBlobGasUsed uint64) uint64 {
+	excessBlobGas := parentExcessBlobGas + parentBlobGasUsed
+	if excessBlobGas < params.BlobTxTargetBlobGasPerBlock {
+		return 0
+	}
+	return excessBlobGas - params.BlobTxTargetBlobGasPerBlock
+}
+
+// CalcBlobFee calculates the blobfee from the header's excess blob gas field.
+func CalcBlobFee(excessBlobGas uint64) *big.Int {
+	return fakeExponential(minBlobGasPrice, new(big.Int).SetUint64(excessBlobGas), blobGaspriceUpdateFraction)
+}
+
+// fakeExponential approximates factor * e ** (numerator / denominator) using
+// Taylor expansion.
+func fakeExponential(factor, numerator, denominator *big.Int) *big.Int {
+	var (
+		output = new(big.Int)
+		accum  = new(big.Int).Mul(factor, denominator)
+	)
+	for i := 1; accum.Sign() > 0; i++ {
+		output.Add(output, accum)
+
+		accum.Mul(accum, numerator)
+		accum.Div(accum, denominator)
+		accum.Div(accum, big.NewInt(int64(i)))
+	}
+	return output.Div(output, denominator)
+}

ethclient/ethclient.go

@@ -693,5 +693,20 @@ func toCallArg(msg ethereum.CallMsg) interface{} {
 	if msg.GasPrice != nil {
 		arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice)
 	}
+	if msg.GasFeeCap != nil {
+		arg["maxFeePerGas"] = (*hexutil.Big)(msg.GasFeeCap)
+	}
+	if msg.GasTipCap != nil {
+		arg["maxPriorityFeePerGas"] = (*hexutil.Big)(msg.GasTipCap)
+	}
+	if msg.AccessList != nil {
+		arg["accessList"] = msg.AccessList
+	}
+	if msg.BlobGasFeeCap != nil {
+		arg["maxFeePerBlobGas"] = (*hexutil.Big)(msg.BlobGasFeeCap)
+	}
+	if msg.BlobHashes != nil {
+		arg["blobVersionedHashes"] = msg.BlobHashes
+	}
 	return arg
 }

ethclient/gethclient/gethclient.go

@@ -213,6 +213,21 @@ func toCallArg(msg ethereum.CallMsg) interface{} {
 	if msg.GasPrice != nil {
 		arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice)
 	}
+	if msg.GasFeeCap != nil {
+		arg["maxFeePerGas"] = (*hexutil.Big)(msg.GasFeeCap)
+	}
+	if msg.GasTipCap != nil {
+		arg["maxPriorityFeePerGas"] = (*hexutil.Big)(msg.GasTipCap)
+	}
+	if msg.AccessList != nil {
+		arg["accessList"] = msg.AccessList
+	}
+	if msg.BlobGasFeeCap != nil {
+		arg["maxFeePerBlobGas"] = (*hexutil.Big)(msg.BlobGasFeeCap)
+	}
+	if msg.BlobHashes != nil {
+		arg["blobVersionedHashes"] = msg.BlobHashes
+	}
 	return arg
 }
 

interfaces.go

@@ -123,6 +123,10 @@ type CallMsg struct {
 	Data      []byte          // input data, usually an ABI-encoded contract method invocation
 
 	AccessList types.AccessList // EIP-2930 access list.
+
+	// For BlobTxType
+	BlobGasFeeCap *big.Int
+	BlobHashes    []common.Hash
 }
 
 // A ContractCaller provides contract calls, essentially transactions that are executed by

params/protocol_params.go

@@ -160,7 +160,11 @@ const (
 	RefundQuotient        uint64 = 2
 	RefundQuotientEIP3529 uint64 = 5
 
-	BlobTxBlobGasPerBlob = 1 << 17 // Gas consumption of a single data blob (== blob byte size)
+	BlobTxBlobGasPerBlob             = 1 << 17 // Gas consumption of a single data blob (== blob byte size)
+	BlobTxMinBlobGasprice            = 1       // Minimum gas price for data blobs
+	BlobTxBlobGaspriceUpdateFraction = 3338477 // Controls the maximum rate of change for blob gas price
+
+	BlobTxTargetBlobGasPerBlock = 3 * BlobTxBlobGasPerBlob // Target consumable blob gas for data blobs per block (for 1559-like pricing)
 )
 
 // Gas discount table for BLS12-381 G1 and G2 multi exponentiation operations

params/version.go

@@ -24,7 +24,7 @@ import (
 const (
 	VersionMajor = 5         // Major version component of the current release
 	VersionMinor = 1         // Minor version component of the current release
-	VersionPatch = 20        // Patch version component of the current release
+	VersionPatch = 21        // Patch version component of the current release
 	VersionMeta  = "mainnet" // Version metadata to append to the version string
 )